ANN-0055
QUESTION
Curled toe in chicks resulting from deficiency of?
OPTIONS
(A) Nicotinic acid
(B) Riboflavin
(C) Thiamine
(D) Manganese
ANSWER
(B) Riboflavin
EXPLANATION
Riboflavin deficiency in chicks produces characteristic curled-toe paralysis because of peripheral nerve dysfunction. Nicotinic acid deficiency causes other signs such as poor growth and dermatitis, thiamine deficiency causes neurologic signs of a different pattern, and manganese deficiency is classically associated with perosis.
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